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在萘胺磺酸生产中,测定异构物含量,对提高产品质量有着重要意义。现代离子对色谱特别适合于可解离物质的分离。Knox利用长链季铵盐溴化十六烷基三甲铵为反离子,使亲水性萘磺酸转变为亲脂性化合物,从而在SAS硅胶反相色谱柱(二碳链)上得以分离。鉴于目前国内仅有长链固定相供应,我们根据组份保留时间随着链合物及反离子碳链增长而增加这一性质,选用国产十八烷基反相色谱柱,配以短链季铵盐为反离子,正丙醇-水作流动相,使下述四种萘胺
Determination of isomeric content in the production of naphthylamines, which is of great importance to improve product quality. Modern ion chromatography is particularly suitable for the separation of dissociable substances. Knox uses long-chain quaternary ammonium cetyltrimethylammonium bromide as a counterion to convert hydrophilic naphthalene sulfonic acids to lipophilic compounds for separation on a silica reverse-phase silica column (two-carbon chain). In view of the current domestic supply of only long-chain stationary phase, according to the retention time of the components with the chain and the counter-ion carbon chain increased growth of this nature, the selection of domestic octadecyl reversed-phase column, with short chain season The ammonium salt is a counterion, n-propanol-water as the mobile phase, allowing the following four naphthylamine